Photodeposition of CoOx nanoparticles on BiFeO3 nanodisk for efficiently piezocatalytic degradation of rhodamine B by utilizing ultrasonic vibration energy

Piezoelectric materials have received much attention due to their great potential in environmental remediation by utilizing vibrational energy. In this paper, a novel piezoelectric catalyst, CoOx nanoparticles anchored BiFeO3 nanodisk composite, was intentionally synthesized via a photodeposition me...

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Autores principales:	Linkun Wang, Junfeng Wang, Chenyin Ye, Kaiqi Wang, Chunran Zhao, Ying Wu, Yiming He
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	BiFeO3 CoOx Piezoelectric effect RhB Piezocatalytic Chemistry QD1-999 Acoustics. Sound QC221-246
Acceso en línea:	https://doaj.org/article/9f2c7488f8574b26b0dfcb4c53ba412c
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spelling	oai:doaj.org-article:9f2c7488f8574b26b0dfcb4c53ba412c2021-12-02T04:59:48ZPhotodeposition of CoOx nanoparticles on BiFeO3 nanodisk for efficiently piezocatalytic degradation of rhodamine B by utilizing ultrasonic vibration energy1350-417710.1016/j.ultsonch.2021.105813https://doaj.org/article/9f2c7488f8574b26b0dfcb4c53ba412c2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1350417721003552https://doaj.org/toc/1350-4177Piezoelectric materials have received much attention due to their great potential in environmental remediation by utilizing vibrational energy. In this paper, a novel piezoelectric catalyst, CoOx nanoparticles anchored BiFeO3 nanodisk composite, was intentionally synthesized via a photodeposition method and applied in piezocatalytic degradation of rhodamine B (RhB) under ultrasonic vibration. The as-synthesized CoOx/BiFeO3 composite presents high piezocatalytic efficiency and stability. The RhB degradation rate is determined to be 1.29 h−1, which is 2.38 folds higher than that of pure BiFeO3. Via optimizing the reaction conditions, the piezocatalytic degradation rate of the CoOx/BiFeO3 can be further increased to 3.20 h−1. A thorough characterization was implemented to investigate the structure, piezoelectric property, and charge separation efficiency of the CoOx/BiFeO3 to reveal the nature behind the high piezocatalytic activity. It is found that the CoOx nanoparticles are tightly adhered and uniformly dispersed on the surface of the BiFeO3 nanodisks. Strong interaction between CoOx and BiFeO3 triggers the formation of a heterojunction structure, which further induces the migration of the piezoinduced holes on the BiFeO3 to CoOx nanoparticles. The recombination of electron-hole pairs is retarded, thereby increasing the piezocatalytic performance greatly. This work may offer a new paradigm for the design of high-efficiency piezoelectric catalysts.Linkun WangJunfeng WangChenyin YeKaiqi WangChunran ZhaoYing WuYiming HeElsevierarticleBiFeO3CoOxPiezoelectric effectRhBPiezocatalyticChemistryQD1-999Acoustics. SoundQC221-246ENUltrasonics Sonochemistry, Vol 80, Iss , Pp 105813- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	BiFeO3 CoOx Piezoelectric effect RhB Piezocatalytic Chemistry QD1-999 Acoustics. Sound QC221-246
spellingShingle	BiFeO3 CoOx Piezoelectric effect RhB Piezocatalytic Chemistry QD1-999 Acoustics. Sound QC221-246 Linkun Wang Junfeng Wang Chenyin Ye Kaiqi Wang Chunran Zhao Ying Wu Yiming He Photodeposition of CoOx nanoparticles on BiFeO3 nanodisk for efficiently piezocatalytic degradation of rhodamine B by utilizing ultrasonic vibration energy
description	Piezoelectric materials have received much attention due to their great potential in environmental remediation by utilizing vibrational energy. In this paper, a novel piezoelectric catalyst, CoOx nanoparticles anchored BiFeO3 nanodisk composite, was intentionally synthesized via a photodeposition method and applied in piezocatalytic degradation of rhodamine B (RhB) under ultrasonic vibration. The as-synthesized CoOx/BiFeO3 composite presents high piezocatalytic efficiency and stability. The RhB degradation rate is determined to be 1.29 h−1, which is 2.38 folds higher than that of pure BiFeO3. Via optimizing the reaction conditions, the piezocatalytic degradation rate of the CoOx/BiFeO3 can be further increased to 3.20 h−1. A thorough characterization was implemented to investigate the structure, piezoelectric property, and charge separation efficiency of the CoOx/BiFeO3 to reveal the nature behind the high piezocatalytic activity. It is found that the CoOx nanoparticles are tightly adhered and uniformly dispersed on the surface of the BiFeO3 nanodisks. Strong interaction between CoOx and BiFeO3 triggers the formation of a heterojunction structure, which further induces the migration of the piezoinduced holes on the BiFeO3 to CoOx nanoparticles. The recombination of electron-hole pairs is retarded, thereby increasing the piezocatalytic performance greatly. This work may offer a new paradigm for the design of high-efficiency piezoelectric catalysts.
format	article
author	Linkun Wang Junfeng Wang Chenyin Ye Kaiqi Wang Chunran Zhao Ying Wu Yiming He
author_facet	Linkun Wang Junfeng Wang Chenyin Ye Kaiqi Wang Chunran Zhao Ying Wu Yiming He
author_sort	Linkun Wang
title	Photodeposition of CoOx nanoparticles on BiFeO3 nanodisk for efficiently piezocatalytic degradation of rhodamine B by utilizing ultrasonic vibration energy
title_short	Photodeposition of CoOx nanoparticles on BiFeO3 nanodisk for efficiently piezocatalytic degradation of rhodamine B by utilizing ultrasonic vibration energy
title_full	Photodeposition of CoOx nanoparticles on BiFeO3 nanodisk for efficiently piezocatalytic degradation of rhodamine B by utilizing ultrasonic vibration energy
title_fullStr	Photodeposition of CoOx nanoparticles on BiFeO3 nanodisk for efficiently piezocatalytic degradation of rhodamine B by utilizing ultrasonic vibration energy
title_full_unstemmed	Photodeposition of CoOx nanoparticles on BiFeO3 nanodisk for efficiently piezocatalytic degradation of rhodamine B by utilizing ultrasonic vibration energy
title_sort	photodeposition of coox nanoparticles on bifeo3 nanodisk for efficiently piezocatalytic degradation of rhodamine b by utilizing ultrasonic vibration energy
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/9f2c7488f8574b26b0dfcb4c53ba412c
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_version_	1718400906767106048

Photodeposition of CoOx nanoparticles on BiFeO3 nanodisk for efficiently piezocatalytic degradation of rhodamine B by utilizing ultrasonic vibration energy

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